http://www.oercommons.org/browse/keyword/absorbance daily 1 2000-01-01T12:00+00:00 http://www.oercommons.org/courses/chemistry-spectrophotometry-example This 13-minute video lesson provides a spectrophotometry Example: determining concentration based on absorbance. [Chemistry playlist: Lesson 101 of 106]. Khan, Salman Science and Technology 2012-05-11T06:12:36 Course Related Materials http://www.oercommons.org/courses/chemistry-spectrophotometry-introduction This 13-minute video lesson discusses spectrophotometry, transmittance, absorbance and the Beer-Lambert Law. [Chemistry playlist: Lesson 100 of 106]. Khan, Salman Science and Technology 2012-05-11T06:12:17 Course Related Materials http://www.oercommons.org/courses/model-greenhouses Students learn about the advantages and disadvantages of the greenhouse effect. They construct their own miniature greenhouses and explore how their designs take advantage of heat transfer processes to create controlled environments. They record and graph measurements, comparing the greenhouse indoor and outdoor temperatures over time. Students are also introduced to global issues such as greenhouse gas emissions and their relationship to global warming. Denise W. Carlson Landon B. Gennetten Lauren Cooper Malinda Schaefer Zarske Mathematics and Statistics Science and Technology 2009-11-02T09:52:37 Course Related Materials